high2lowgid
(size >= sizeof(gid) ? (gid) : high2lowgid(gid))
group = high2lowgid(from_kgid_munged(user_ns, kgid));
return high2lowgid(from_kgid_munged(current_user_ns(), current_gid()));
return high2lowgid(from_kgid_munged(current_user_ns(), current_egid()));
rgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->gid));
egid = high2lowgid(from_kgid_munged(cred->user_ns, cred->egid));
sgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->sgid));